Chemical Engineering Basics | Test For NTS PPSC FPSC, TEST

A. Water alkalinity & leakage
B. Hydrazine addition during feed water treatment
C. Release of non-condensable gas from water in the boiler
D. Scale formation

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Category: Chemical Engineering Basics

‘Dikes’ are low height walls made around the storage vessels meant for storing hazardous & inflammable material (e.g., petroleum products). Volume of dikes is equal to (where, V = volume of the storage vessel) ?

The ratio of the shear stress to the principal stress on a principal plane is______________________?

If the head is doubled in & centrifugal pump, the power required will increase in the ratio of__________________?

Sudden fall of atmospheric pressure by a large amount is an indication of the_____________________?

______________________ temperature remains constant during adiabatic saturation process of unsaturated air ?

Calorific value of ____________________ are almost same?

Brittleness induced due to the presence of sulphur in steel can be reduced by adding______________?

Which one of the following is incombustible ?

In TIG welding, thoriated tungsten electrodes are used, because it ____________________?

The most prominent single cause of corrosion in boiler-tubes, drums, economisers and steam superheaters in a thermal power plant boiler is the_______________?